Add servertest grant policy control plane tests covering basic grants, via grants, and cap grants. Fix ReduceRoutes in State to apply route reduction to non-via routes first, then append via-included routes, preventing via grant routes from being incorrectly filtered.
Updates #2180
Test via route computation for viewer-peer pairs: self-steering returns
empty, viewer not in source returns empty, peer without advertised
destination returns empty, peer with/without via tag populates
Include/Exclude respectively, mixed prefix and autogroup:internet
destinations, and exit route steering.
7 subtests covering all code paths in ViaRoutesForPeer.
Updates #2180
This commit upgrades the codebase from Go 1.25.5 to Go 1.26rc2 and
adopts new language features.
Toolchain updates:
- go.mod: go 1.25.5 → go 1.26rc2
- flake.nix: buildGo125Module → buildGo126Module, go_1_25 → go_1_26
- flake.nix: build golangci-lint from source with Go 1.26
- Dockerfile.integration: golang:1.25-trixie → golang:1.26rc2-trixie
- Dockerfile.tailscale-HEAD: golang:1.25-alpine → golang:1.26rc2-alpine
- Dockerfile.derper: golang:alpine → golang:1.26rc2-alpine
- .goreleaser.yml: go mod tidy -compat=1.25 → -compat=1.26
- cmd/hi/run.go: fallback Go version 1.25 → 1.26rc2
- .pre-commit-config.yaml: simplify golangci-lint hook entry
Code modernization using Go 1.26 features:
- Replace tsaddr.SortPrefixes with slices.SortFunc + netip.Prefix.Compare
- Replace ptr.To(x) with new(x) syntax
- Replace errors.As with errors.AsType[T]
Lint rule updates:
- Add forbidigo rules to prevent regression to old patterns
Add test reproducing the exact scenario from issue #2990 where:
- One user (user1) in group:admin
- node1: user device (not tagged)
- node2: tagged with tag:admin, same user
The test verifies that peer visibility and packet filters are correct.
Updates #2990
Previously, nodes with empty filter rules (e.g., tagged servers that are
only destinations, never sources) were skipped entirely in BuildPeerMap.
This could cause visibility issues when using autogroup:self with
multiple user groups.
Remove the len(filter) == 0 skip condition so all nodes are included in
nodeMatchers. Empty filters result in empty matchers where CanAccess()
returns false, but the node still needs to be in the map so symmetric
visibility works correctly: if node A can access node B, both should see
each other regardless of B's filter rules.
Add comprehensive tests for:
- Multi-group scenarios where autogroup:self is used by privileged users
- Nodes with empty filters remaining visible to authorized peers
- Combined access rules (autogroup:self + tags in same rule)
Updates #2990
When autogroup:self was combined with other ACL rules (e.g., group:admin
-> *:*), tagged nodes became invisible to users who should have access.
The BuildPeerMap function had two code paths:
- Global filter path: used symmetric OR logic (if either can access, both
see each other)
- Autogroup:self path: used asymmetric logic (only add peer if that
specific direction has access)
This caused problems with one-way rules like admin -> tagged-server. The
admin could access the server, but since the server couldn't access the
admin, neither was added to the other's peer list.
Fix by using symmetric visibility in the autogroup:self path, matching
the global filter path behavior: if either node can access the other,
both should see each other as peers.
Credit: vdovhanych <vdovhanych@users.noreply.github.com>
Fixes#2990
This commit changes so that node changes to the policy is
calculated if any of the nodes has changed in a way that might
affect the policy.
Previously we just checked if the number of nodes had changed,
which meant that if a node was added and removed, we would be
in a bad state.
Signed-off-by: Kristoffer Dalby <kristoffer@dalby.cc>
This PR changes tags to be something that exists on nodes in addition to users, to being its own thing. It is part of moving our tags support towards the correct tailscale compatible implementation.
There are probably rough edges in this PR, but the intention is to get it in, and then start fixing bugs from 0.28.0 milestone (long standing tags issue) to discover what works and what doesnt.
Updates #2417Closes#2619
This commit changes most of our (*)types.Node to
types.NodeView, which is a readonly version of the
underlying node ensuring that there is no mutations
happening in the read path.
Based on the migration, there didnt seem to be any, but the
idea here is to prevent it in the future and simplify other
new implementations.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* Make matchers part of the Policy interface
* Prevent race condition between rules and matchers
* Test also matchers in tests for Policy.Filter
* Compute `filterChanged` in v2 policy correctly
* Fix nil vs. empty list issue in v2 policy test
* policy/v2: always clear ssh map
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
---------
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
Co-authored-by: Aras Ergus <aras.ergus@tngtech.com>
Co-authored-by: Kristoffer Dalby <kristoffer@tailscale.com>
* utility iterator for ipset
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* split policy -> policy and v1
This commit split out the common policy logic and policy implementation
into separate packages.
policy contains functions that are independent of the policy implementation,
this typically means logic that works on tailcfg types and generic formats.
In addition, it defines the PolicyManager interface which the v1 implements.
v1 is a subpackage which implements the PolicyManager using the "original"
policy implementation.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* use polivyv1 definitions in integration tests
These can be marshalled back into JSON, which the
new format might not be able to.
Also, just dont change it all to JSON strings for now.
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* formatter: breaks lines
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* remove compareprefix, use tsaddr version
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* remove getacl test, add back autoapprover
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* use policy manager tag handling
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* rename display helper for user
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* introduce policy v2 package
policy v2 is built from the ground up to be stricter
and follow the same pattern for all types of resolvers.
TODO introduce
aliass
resolver
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* wire up policyv2 in integration testing
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* split policy v2 tests into seperate workflow to work around github limit
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* add policy manager output to /debug
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
* update changelog
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
---------
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
